How to install the Avid codec for use in Blender
The later era Avid format is DNxHD, with the more recent DNxHR.

FFMPEG is capable of decoding DNxHD. If using proper libraries, Blender would import DNxHD as an 8 bit per channel image, likely sub-optimal. Blender relies on swscale from FFMPEG to convert the (typically) YCbCr planes to RGB, at 8 bits per channel.

DNxHD is not a reliable format for visual effects, nor is any codec for that matter.